This is the ic based Audio Power Amplifier Circuit Diagram. The LM383 is
an audio-power amplifier that is capable of producing up to 8 W of
audio output. R1 is essentially a load resistor for the hand-held
transceiver`s audio output. R2 can be composed of two fixed resistors in
a 10:1 divider arrangement, but using a potentiometer makes it easy to
set the amplifier`s maximum gain.
Audio Power Amplifier Circuit Diagram
When powered from a vehicle`s electrical system, the amplifier`s +12V power source requires filter L1 to eliminate alternator whine. The LM383 can ·be mounted directly on the heatsink because the mounting tab is at ground potential.
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